#233A8F#233A8F

#233A8F is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.6% C 0.143 H 267.6°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#233A8F
RGB	rgb(35, 58, 143)
HSL	hsl(227, 61%, 35%)
HSV	hsv(227, 76%, 56%)
CMYK	cmyk(75.5%, 59.4%, 0%, 43.9%)
CIE-LAB	lab(27.75, 22.60, -49.65)
CIE-LCH	lch(27.75, 54.56, 294.48°)
OKLab	oklab(38.57% -0.0061 -0.1433)
OKLCH	oklch(38.57% 0.143 267.6)
XYZ	xyz(7.1624, 5.3658, 26.6395)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A8F #8F7823

analogous

#23708F #233A8F #42238F

triadic

#233A8F #8F233A #3A8F23

tetradic

#233A8F #8F2370 #8F7823 #238F42

square

#233A8F #8F2370 #8F7823 #238F42

split-complementary

#233A8F #8F4223 #708F23

monochromatic

#0B122D #17265E #233A8F #2F4EC0 #5772D6

Accessibility & contrast

On white

10.13

#233A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#233A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A8F

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A8F	#FFFFFF	#000000	##FFFFFF
##233A8F	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003D8D

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #233a8f;
/* rgb */ color: rgb(35, 58, 143);
/* oklch */ color: oklch(38.6% 0.143 267.6);

Tailwind

colors: {
  custom: {
    50: '#6e6fb1',
    500: '#233a8f',
    950: '#000000',
  },
}

SCSS

$custom: #233a8f;
$custom-light: #6e6fb1;
$custom-dark: #000000;

JSON

{
  "hex": "#233a8f",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 143
  },
  "hsl": {
    "h": 227.222,
    "s": 60.674,
    "l": 34.902
  },
  "oklch": {
    "l": 0.3857,
    "c": 0.1434,
    "h": 267.6
  },
  "luminance": 0.05367
}

Semantic roles & 50–950 ramp

primary

#233A8F

secondary

#BAA454

accent

#C244E4

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #233A8F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →